Squarespace OCSP Stapling Implementation

We’re excited that Squarespace has decided to protect the millions of sites they host with HTTPS! While talking with their team we learned they were...

Introducing Internationalized Domain Name (IDN) Support

Let’s Encrypt is pleased to introduce support for issuing certificates that contain Internationalized Domain Names (IDNs). This means that our users around the world...

DDoS’s Newest Minions: IoT Devices (Volume 1)

The latest evolution of cyber weapons is brought to you by the default passwords in Internet of Things (IoT) devices. - Read more

ISRG Legal Transparency Report, January 2016 – June 2016

The trust of our users is ISRG’s most critical asset. Transparency regarding legal requests is an important part of making sure our users can...

What It Costs to Run Let’s Encrypt

Today we’d like to explain what it costs to run Let’s Encrypt. We’re doing this because we strive to be a transparent organization, we...

Let’s Encrypt Root to be Trusted by Mozilla

The Let’s Encrypt root key (ISRG Root X1) will be trusted by default in Firefox 50, which is scheduled to ship in Q4 2016....

Full Support for IPv6

Let’s Encrypt is happy to announce full support for IPv6. As IPv4 address space is exhausted, more and more people are deploying services that are...

Web Injection Threats: The Cost of Community Engagement on Your Site

Customer engagement drives web application design, but user-generated content brings inherent security challenges. - Read more

Latest article

23 ClawHub Plugins Abuse Official Org Scopes to Impersonate Trusted AI Agent Tools

A new supply chain threat has surfaced in the AI agent ecosystem that is both subtle and serious. Researchers uncovered 23 plugins on...

New Apple Exploit Exposes Millions of iPhones Worldwide, No Software Fix Available

Researchers disclosed usbliter8, a SecureROM exploit affecting older Apple devices that can bypass boot protections with physical access. The post New Apple Exploit Exposes Millions...

AI-powered cyber attacks may be just months away, warn Five Eyes

Frontier AI models will pose a greater cyber security risk to government and businesses than previously thought, putting businesses and governments at risk within...

AWS Continuum offers devs help with securing code

AI coding agents are making it easier than ever to produce software. Ensuring that software is secure before deployment is...